情境
A pairing app with premium subscriptions requires tracking user subscriptions, billing cycles, and payment methods.
這張圖裡有什麼
看懂背後的決策。
01
Associate Payment with both User and Subscription to capture all transactions and support multiple payments per subscription
02
Model Plan as a separate class referenced by Subscription to decouple subscription details from plan configuration
03
Use enumerations for SubscriptionStatus and PaymentMethod to constrain attribute values
When designing the database schema or class model for subscription-based mobile applications, especially dating or pairing apps.